1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
qwelly [4]
3 years ago
6

Where is life suggested to have begun?

Biology
1 answer:
-BARSIC- [3]3 years ago
8 0

Answer:

Life is suggested to have started in an aquatic ecosystem - the ocean.

Explanation:

For decades, life has been suggested to have started in an aquatic environment due to evidence of ancient fossils and chemical studies.

Recently, scientists have been able to narrow these suggestions to state that life originated in a deep sea hydrothermal vent. This hypothesis arised due to the presence of chemicals that are thought to have produced the chemical reactions that are necessary for the evolution of life.

The first living forms on Earth were single-celled micro-organisms called stromatolites - <em>rock-like structures formed by cyanobacteria</em> - that appeared around four billion years ago. Interestingly, we are still able to find these ancient creatures but only in specific regions of the world such as Cuatro Cienegas, Coahuila in Mexico.

You might be interested in
Cross a Heterozygous Type A with a Heterozygous Type B? What genetic terms best describes the genotypes of the offspring?
ahrayia [7]
Draw a box. On the vertical side of the box write A and O

On the horizontal side write B and O

Take each letter and combine it with the two letters in the other plane and write them in the box.

AB AO OB OO and BA BO OA OO

Knowing that the A and B genes are dominant … you get the following children probabilities:

AO OA are A’s

OB BO are B’s

AB BA are AB’s

OO and OO are O’s

THE TWO PARENTS CAN PRODUCE all the blood types of the ABO SYSTEM.
6 0
3 years ago
Construction workers attach ropes and pulleys to wooden timbers on an old bridge.
balu736 [363]

Answer:

It is a safe and efficient method.

Explanation:

This method of dismantle the bridge is also a good one but there are some other methods also that are used instead of rope and pulley system such as destroy the bridge by using bombs at the base of pillars and cutting of each part in order to dismantle the bridge. This rope and pulley system is also an efficient way to dismantle the bridge so that's why the engineers used this method instead of other methods due to its safe method.

5 0
3 years ago
I.
FrozenT [24]

Add a metabolic poison to the water to block any active metabolism and see if the seed germinates the same as without the poison.

  • The percent increase in mass decreases with rising temperature. As temperature rises, its value approaches that of the percent increase in mass.
  • There are two types of requirements for microbial growth: physical and chemical. Osmotic pressure, pH, and temperature are examples of physical factors.
  • Water, supplies of carbon and nitrogen, minerals, oxygen, and organic growth stimulants are all chemical necessities.
  • hence by using poison to block the active metabolism of seed the chemical growth will be restricted. If the seed still swells this means that it is a physical process.
  • If the seed swelling stops then the process is considered chemical.

learn more about seed here: brainly.com/question/1022692

#SPJ9

7 0
2 years ago
HELP PLEASE!!!! I’ll really appreciate it:( what is the experimental variable, independent variable, dependent variable, control
vlabodo [156]
I’m like 99 Percent sure this is right.

Experimental Variable: Orange Trees
IND. Variable: The Fungi
DEP. Variable: Fruit Weight
Control Group: Group A
Experimental Group: Group B

Hope this helps!
7 0
3 years ago
Which of the following enzymes catalyzes the production of a strand of rna from dna? 1) RNA polymerase 2) RNA ligase 3) a ribozy
olga55 [171]

Answer:

The correct answer is 1 RNA Polymerase

Explanation:

RNA polymerase helps in the formation of RNA from DNA by the process known as transcription.There are 3 types of RNA Polymerase in Eukaryotic cell they are given below

1  RNA Polymerase 1   this enzyme helps in the synthesis of ribosomal RNA or rRNA.

2  RNA Polymerase 2   this enzyme helps in the formation of messenger RNA or mRNA .

3   RNA Polymerase 3    this enzyme helps in the synthesis of transfer RNA or tRNA.

6 0
3 years ago
Other questions:
  • Which term describes this example? A white cat has a mother that is homozygous dominant and a father that is homozygous recessiv
    15·2 answers
  • Which statement best compares the density among the three states of matter?
    9·2 answers
  • Prokaryotes are surrounded by a ____________ that regulates the entry and exit of materials through the cell, the cell wall to h
    6·1 answer
  • Cryptozoology is a field of study aimed at proving the existence of mystery animals such as bigfoot and the Loch Ness monster wh
    8·2 answers
  • Which best describes the uterus? It is a muscular organ where a developing offspring grows. It is the external part of the femal
    6·2 answers
  • Your pet snake would be found in what kingdom?
    7·2 answers
  • GRADE 10 ASSIGNMENT
    9·1 answer
  • Help with these two please
    12·1 answer
  • Hello all. I really need help immediately with this question. Here is the question! Explain how these terms work together IN TRA
    8·1 answer
  • Dogs, like all species, carry many different genes on each of their chromosomes. The chromosomes that are inherited by the puppi
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!